
【名词&注释】
体育锻炼(physical exercise)、腐蚀性(corrosion)、危害性(harmfulness)、心肌梗塞(myocardial infarction)、轮廓线(contour)、救生艇(boat)、水溶液(aqueous solution)、重体力劳动(hard physical labor)、刺激性气味(pungent odour)、轻体力劳动(light activity)
[单选题]Throttling in the _____ line of a centrifugal pump involves the risk of the pump cavitation.
A. suction
B. exhaust
C. pressure
D. discharge
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举一反三:
[单选题]I want a clamp. Could you ________ me one?
A. bring
B. take
C. carry
D. acquire
[单选题]氨的水溶液(aqueous solution)俗称氨水,是带有刺激性气味(pungent odour)的易燃、有毒的水溶液(aqueous solution),对眼睛有极大危害性,对很多金属具有腐蚀性,但对()投有显著的腐蚀性。
A. 铜及合金
B. 镍
C. 钢铁
[单选题]开始装货时,()应首先检查确认所有与装载有关的阀,均己处在正确的开关位置。
A. 港方人员
B. 货主
C. 船上负责的船员
[单选题]急性心肌梗塞病人应禁止______。
A. 重体力劳动(hard physical labor)
B. 轻体力劳动(light activity)
C. 一切活动
D. 体育锻炼
[单选题]当视图中的轮廓线与重合断面的轮廓线重合时,视图中的轮廓线应( )画出,( )中断。
A. 不连续/应
B. 用双点画线/不
C. 连续/不
D. 用细实线/不
[单选题]自由降落式救生艇艇员登艇后,应面向()。
A. 艇首
B. 艇尾
C. 艇舷侧
[单选题]规范中规定舱底水管应在船舶横倾_________以内把舱底水排干
A. 5?
B. 10?
C. 15
D. 20
[单选题]When the refrigeration demand is small,_______.
A. the expansion valve will move toward the wide open position
B. the expansion valve will move toward the closing position
C. the feeler bulb will conveys the high temperature
D. the superheat degree will raise
[单选题]When placed in a magnetic field, which of the materials listed will maintain the highest permeability?( )
A. Glass
B. Bakelite
C. Soft iron
D. Aluminum
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